Abstract
Selective Catalytic Reduction system (SCR) has made great contributions to diesel engine NOx control technology. The gas flow condition in exhaust pipe has a great effect on catalytic reduction reaction of SCR, especially the airflow through carriers. In this paper, CFD technology was used to simulate the internal flow field, and analyze the gas flow uniformity, which would give us reasonable suggestions to optimize the structure of SCR-Exhaust aftertreatment system.
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